How to install language specific ttc otf ttf fonts on linux/ubuntu/raspberry pi

Written By Sanjir Habib On Oct-16th, 2018
  1. Collect the *.ttc file.

  2. Use an online tool to convert it into multiple *.otf files.

  3. copy the files into /usr/local/share/fonts/

  4. To be sure that it works, go to /usr/share/fonts/truetype/* and delete all other fonts that match the language.

  5. run

sudo fc-cache -f -v